5027-85-0

Basic information

• Product Name: 2-phenyl-4-(pyridin-4-ylmethylene)oxazol-5(4H)-one
• Synonyms: 2-phenyl-4-(pyridin-4-ylmethylene)oxazol-5(4H)-one
• CAS NO: 5027-85-0
• Molecular Weight: 250.257
• Mol File: 5027-85-0.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 2-phenyl-4-(pyridin-4-ylmethylene)oxazol-5(4H)-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2-phenyl-4-(pyridin-4-ylmethylene)oxazol-5(4H)-one(5027-85-0)
• EPA Substance Registry System: 2-phenyl-4-(pyridin-4-ylmethylene)oxazol-5(4H)-one(5027-85-0)

Safety Data

• Hazardous Substances Data: 5027-85-0(Hazardous Substances Data)

Upstream product

• 98-88-4 benzoyl chloride 
• 872-85-5 pyridine-4-carbaldehyde 
• 532-94-5 sodium hippurate 
• 1199-01-5 2-phenylazlactone 
• 495-69-2 Hippuric Acid 

Downstream Products

• 5027-89-4 4-[5,5-bis-(2-chloro-phenyl)-2-phenyl-oxazol-4-ylidenemethyl]-pyridine 

Relevant articles and documents

An ionic liquid gel: A heterogeneous catalyst for Erlenmeyer-Plochl and Henry reactions

An ionic liquid gel has been prepared by entrapping 1-butyl-3-methylimidazolium hydroxide ([Bmim]OH) in an aqueous agar gel. The ionic liquid gel has been characterized by Fourier transform infrared (FT-IR), Fourier transform Raman (FT-Raman) spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and energy dispersive X-ray analysis (EDX). The ionic liquid gel has been successfully employed as a heterogeneous catalyst in the Erlenmeyer-Plochl reaction involving aldehydes, hippuric acid and acetic anhydride as well as in the Henry reaction between aldehydes and nitromethane in ethanol at room temperature. The heterogeneity of the ionic liquid gel has been confirmed by conducting hot filtration tests and leaching studies. Additionally, the ionic liquid gel could be easily recovered by simple filtration and reused five times without significant loss in catalytic activity.

Greener approach: Ionic liquid [Et3NH][HSO4]-catalyzed multicomponent synthesis of 4-arylidene-2-phenyl-5(4H)oxazolones under solvent-free condition

We have developed simple, greener, safer multicomponent synthesis series of 4-arylidene-2-phenyl-5(4H) oxazolones 4(a-r) catalyzed by Bronsted acid ionic liquid as triethylammonium hydrogen sulfate [Et3NH][HSO4] and catalytic amount of acetic anhydride and sodium acetate with excellent yields (90–99%). The protocol offers economical, environmentally benign, solvent-free conditions, and recycle–reuse of the catalyst and easily available starting as benzoyl chloride 1, amino acid 2 and a variety of aldehydes 3. The cyclization followed by condensation of benzoyl chloride, amino acid, and a variety of aldehydes catalyzed by ILs [Et3NH][HSO4] and catalytic amount of acetic anhydride and sodium acetate. The final products were confirmed by their characterization data such as FTIR, 1H-NMR, 13C-NMR, Mass, high-resolution mass spectra and were compared with its reported method.